Yes, this looks definitely like it. Thank you very much!


On 27/06/18 10:51, Arnaud Lauriou wrote:
> Hi,
>
> Yes, I've got quite the same issues with RHEL5 guests on oVirt 4.2.3 :
> random guest freeze and oVirt host crash while rebooting a guest !
> It seems to be a kernel bug introduce with 7.5 :
> https://bugzilla.redhat.com/show_bug.cgi?id=1584775
>
> https://access.redhat.com/solutions/3496461
>
> While waiting for this kernel patch, I use an older kernel version on
> the oVirt host : 3.10.0-693.21.1.el7 works fine with oVirt 4.2.3 and
> RHEL5 guest.
>
> Regards,
>
> Arnaud Lauriou
>
> On 06/27/2018 08:59 AM, Eduardo Mayoral wrote:
>>
>> Hi,
>>
>>     I am experiencing that my RHEL5 guests frequently "hang" when
>> migrating host. Console is blank, CPU after migration is 100% and as
>> far as oVirt is concerned, the VM is OK.
>>
>>     oVirt is 4.2.3.8-1.el7, on CentOS 7. Hosts are CentOS 7 as well.
>> Cluster is in "Intel Westmere family" CPU type.
>>
>>     Guest is RHEL5, fully patched, kernel 4.2.3.8-1.el7 with
>> ovirt-guest-agent installed from EPEL.
>>
>>     I do not see anything out of place in the ovirt-engine and vdsm
>> logs, and the guest logs are simply not there, the stop right before
>> the migration,as if the machine had "frozen".
>>
>>     Powering the VM off and starting it starts the VM correctly. This
>> does not happen 100% of the time. If I try to migrate the VM when it
>> is freshly started the migration is faster (maybe 5 seconds), and the
>> guest OS does not hang.
>>
>>     Anybody else experiencing something similar? Maybe something
>> (timeouts?) that I should tune on the guest OS for RHEL5?
>>
>>     Thanks!
>>
>> --
>>
>> Eduardo Mayoral.
>>
>>
>>
>>
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